Molded surface of a concrete block



FIG. 1 is a front view of a molded surface of a concrete block showing our new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a perspective view thereof.

The broken lines in the drawing views are included for the purpose of illustrating portions of the molded surface of a concrete block that form no part of the claimed design. 

CLAIM The ornamental design for a molded surface of a concrete block, as shown and described. 